Dish-washing machine.



No. 862,138L PATHNTHD AUG. 6, 1907.

I. H. CONWAY, DISH WASHING MACHINE.

APPLICATION FILED FEB.21, 1907.

1 NHA rArN'r JOHN EDWARD CONWAY,OF OSGOOD, IOWA.

DISH-'WASHING MACHINE Specification of Letters Patent.

Patented Aug. 6, 1907.

Application filed February 21, 1907., Serial No 358,672.V

To all whom it may concern:

' Be it lnlown that I, JOHN DWARD CONWAY, a citizen of the United States, residing at Osgood, in the county of Palo Alto and State of Iowa, have invented a new and useful Dish-Washing Machine,`of which the following is a specification.

This invention relates to dish washing machines, and has for its principal object to provide' a device of very simple and economical construction which may be usedy for Washing plates, saucers, cups, bowls or other articles, as well as cutlery.

A further object of the invention is toy provide a ma chine which may be readily manipulated, and into which the dishes or other articles to be washed may be readily introduced. 4

With these and other objects in view, as will more fully hereinafter appear,- the invention consists in certain novel features of construction and arrangement of parts, hereinafter. fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, siz'e and minor details oi construction may be made without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings z-Figure 1 is a plan view of a dish washing machine constructed in accordance with the invention. Fig. 2 is a longitudinal sectional view of the same on the line 2-2 of Fig. 1. Fig. 3 is an end elevation of the'machine. Fig. 4 is a sectional detail view of a portion of one of the mai brushes.

Similar numerals oi reference are employed to indicate corresponding parts throughout the several figures of the drawings.

The body of the machine is formed of wood or metal, or a combination of both, and includes a pan or tub that is supported by a pair of small standards 11 and 12, these being provided with at faces, so that the device may be placed on a table or other suitable support when in use.

The body portion of the pan is tapered, narrowing gradually in the direction of a central well Yhaving opposite end walls 16 and 17 which form supports for a shaft 18, said shaft carrying -a revoluble brush 19, and near one end oi this shaft is secured a suitable gear 20. Above the shaft 18 is arranged a shaft 22 which may rock in a suitable opening formed in a bearing plate 23 carried by the end wall 17 and on this shaft 23 is a brush 24 having a tapered or pointed outer end, as shown more clearly in Fig. 2, Near the inner end'of the shaft is secured a gear wheel 25 which interrneshes with the gear wheel 20, the two brushes being of uniform size, and the gears being of the same diameter, so that the brushes will be rotated at the same surface speed. 'lhe outer end of the shaft 22 passes through an of course, be substituted for the crank where mechanism is used to drive the machine.

Near the iront of the machine is a metallic'strap or bar which serves as a support for a brush 31,V this brush being a stationary and being adapted to receive the central portion of the bottom of a saucer, plate, vegetable dish or like. article, while the brushes act on the upper and lower surfaces thereof. They strap or bar 30 serves to hold the brush in elevated position against the bottom of the article being washed.

The crank shaft end of the shaft 22 extends through an opening formed in one arm of a bell crank lever 34, said lever `being iulcrumed on a stud projecting from the standard 12. The opposite erin of the bell crank lever is connected by a tension spring -36 to a stationary eye 37, the spring tending normally to elevate the cranked end of the shaft 22, and thus rock the shaft in the bearing 23, forcing the upper brush downagainst the upper surface of the article being washed. The limit of movement of this lever is controlled by a stop 3S that is secured to and projects from the standard 12 and is arranged to be engaged by the approximately vertical arm of the bell crank lever as will be seen on reference to Fig. 3. l

l When'washing a saucer, plate or like dish, the edge of the article is introduced between the upper and lower revoluble rollers with its central portion resting on the brush 39, and as the crank is turned, the two brushes are revolved, while the rotation vof the article 'is retarded by its engagement with the stationary brush 3l, and in this manner the article may be thoroughly cleansed.

Where the article is of such construction as to prevent its free entrance between the two revoluble brushes, it is merely necessary to pull down on the cranked end of the shaft 22, thereby raising the upper brush and leaving an open space between the two brushes to permit the ready introduction of the dish and in the case of a cup or other handled articles, the brushes may be revolved in one direction until the handle strikes the lower brush, and then revolved in the opposite direction until the handle strikes against the opposite side of the brush. Where articles of large diameter" are to be washed, such for instance as dinner plates, an auxiliary brush 36 may-be used, this brush being carried by a handled lever 37 pivoted at 38 to the frame land being designed to engage with the central portion oi the plate or other dish.

Where the plate yis of large diameter, the cylindrical brushes will not extend to the center, and it, therefore, becomes necessary to adjust the brush 3G to a position at or about the center' of the plate, so that the latter may be washed. This center brush 3G furthermore serves as a means for holding the dish in place by pressing the same down against the stationary brush 3l.

It will be noted that'the two cylindricalbrushes are' of uniform diameter Yfrom end to end, and are se geared that they move at the same surface speeds. Inasmuch as the outer ends oi the brushes which engage With the central portions of the plates or other articles have much less surface to cover than those portions of the brushes nearest the gear Wheels, it ollows that a Vig` orous scrubbing action will take place throughout theI f the manner indicated at 43, the central portions of the` bristles being thus confined, While the opposite ends of -the bristles project beyond th'e edges oi the strips and from the active surfaces of the brush.

As a matter of convenience, one side of the pan or tub vl() is provided with a suitable Ksuspension loop, and at the opposite side the -pan is inturned in the form of a.

ilange, so that a small drip pocket may be formed to receive moisture from the brushes when the device is suspended from a nail or other support.

1. In a dish washing machine, a panor tub, a stationary brush arranged to form a support for the 'central portion of the articles to be washed, and a pair of revoluble` brushes arranged to operate on the opposite faces of such articles. I

2. In a dish Washing machine, a pan or tub,4 a stationary brush forming a central support for the dish, and a pair of revolubie brushes arranged to engage with the opposite spring tending to force one ot' the brushes toward the other.

1. ln a dish washing machine, a stationary brush forming a central dish support, a pair of revoluble brushes,

supportingy shafts therefor, a bearing in which one ofthe shafts is arranged to rock, and a spring acting on such shaft and tending to move the brushes into engagement with euch other.

5. Ina dish. washing machine-fa pan, a stationarybrush forming a central lsupport for a dish, a pair of revoiuble scrubbing brushes, shafts carrying the same, a rocking bearing for one of said-shafts, a spring engaging;

the rockingshaft and tending to force the brushes intol engagement and un operating. crank carried b v the rocking shaft and servingr also as a means for separating the brushes against stress of the spring.

ii. In a dish washing machine, a pan, -a stationary brush, a pail ofievoluble scrubbing` brushes of unequal length, shafts carrying ksaid brushes, a rocking hearing 'for the uppermost shaft, an operating crank secured to said shaft,

a bell crank lever having one arm engaging the rocking shaft, und aspring-connecrted to the opposite arm of the bell crankl leverl and tending to vforce the upper brush into engagement with the lower brush.

' 7. In a dishwashilng machine, a pan or tub having sloping sides, and a central'well, a revoluble brush arranged within the Well, an upper revoluble brush, gearing connections between' the two brushes, 'and a stationary brush co-actim.r with the lower brush to support the dishes to' be washed. J v

8. in a dish washing; muchine,va pan or tub, a stationary supportfor the central portion of the articles to be washed, and a pair of movable brushes arranged to operate on the opposite faces of such articles. f

in testimony that I claim the `foregoing as my own, l

haveA hereto affixed my signature in the presence of two Witnesses. d

' JOHN' EDWARD CONWAY..

Witnesses:

, M. J. CONWAY,

Z. F. DicKINsoN. 

